java - ZXing二维码扫描黑莓崩溃

Question

我正在为黑莓设备实现 QR 码扫描仪，并使用 ZXing 库来实现此目的。顺便说一句，这是针对 os 6+ 的。我遇到的问题是，有时，仅有时，当相机打开准备扫描时，设备会卡住并完全重新启动...

否则它在大多数情况下都可以工作，我可以扫描和解码二维码等。但是，它似乎偶尔会无缘无故地崩溃。我不知道这是相机的问题还是我的代码中的问题，但我会提供代码。

public void scanBarcode() {

    // First we create a hashtable to hold all of the hints that we can
    // give the API about how we want to scan a barcode to improve speed
    // and accuracy.
    Hashtable hints = new Hashtable();

    // The first thing going in is a list of formats. We could look for
    // more than one at a time, but it's much slower.
    Vector formats = new Vector();
    formats.addElement(BarcodeFormat.QR_CODE);
    hints.put(DecodeHintType.POSSIBLE_FORMATS, formats);

    // We will also use the "TRY_HARDER" flag to make sure we get an
    // accurate scan
    hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);

    // We create a new decoder using those hints
    BarcodeDecoder decoder = new BarcodeDecoder(hints);

    // Finally we can create the actual scanner with a decoder and a
    // listener that will handle the data stored in the barcode. We put
    // that in our view screen to handle the display.
    try {
        _scanner = new BarcodeScanner(decoder, new MyBarcodeDecoderListener());
        _barcodeScreen = new MyBarcodeScannerViewScreen(_scanner);

    } catch (Exception e) {
        return;
    }


    // If we get here, all the barcode scanning infrastructure should be set
    // up, so all we have to do is start the scan and display the viewfinder
    try {
        _scanner.stopScan();
        _scanner.getPlayer().start();
        _scanner.startScan();
        UiApplication.getUiApplication().pushScreen(_barcodeScreen);
    } catch (Exception e) {
    }

}

/***
 * MyBarcodeDecoderListener
 * <p>
 * This BarcodeDecoverListener implementation tries to open any data encoded
 * in a barcode in the browser.
 * 
 * @author PBernhardt
 * 
 **/
private class MyBarcodeDecoderListener implements BarcodeDecoderListener {

    public void barcodeDecoded(final String rawText) {

        //UiApplication.getUiApplication().popScreen(UiApplication.getUiApplication().getActiveScreen());
        UtilityDecoder.saveToHistory(rawText);

        try {
            UtilityDecoder.distributeBarcode(rawText);
        } catch (PIMException e) {
        }
    }

}

当我单击工具栏上的按钮时，我基本上会调用 scanBarcode()。

谁能告诉我是我的代码有问题，还是设备有问题，还是其他什么问题？预先感谢您提供的任何帮助!

Answer 1

尝试此链接:

Scan Any Type of Barcode Image which Supports Blackberry

请参阅此论坛链接并查看该链接的讨论。当然，您将获得条码扫描的整体概念，并且您还将获得5.0版本中QRCode的实现

Any type of Barcode scaning in 5.0